Two armies

Innate vs adaptive immunity

Your client has two defence systems. The innate army (neutrophils, monocytes, NK cells) is fast and general — it hits anything foreign within hours, but it doesn’t learn. The adaptive army (lymphocytes) is slow to mobilise — days — but it’s precise and it remembers, which is how vaccines and past infections protect you.

Innate responds in hours and forgets; adaptive takes days and remembers

Rough rule: a neutrophil shift leans bacterial/acute-stress; a lymphocyte shift leans viral. The differential hints which army is engaged.